Consider the following reaction. N2O4(g)⟶2NO2(g)N2O4(g)⟶2NO2(g) Under certain conditions, the average rate of appearance

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Consider the following reaction.
N2O4(g)⟶2NO2(g)N2O4(g)⟶2NO2(g)
Under certain conditions, the average rate of appearance of
nitrogen dioxide gas, NO2(g)NO2(g),
is 0.680 atm⋅s−10.680 atm⋅s−1.
What is the average rate for the disappearance
of N2O4(g)?N2O4(g)?
0.462 atm⋅s−10.462 atm⋅s−1
0.340 atm⋅s−10.340 atm⋅s−1
1.36 atm⋅s−11.36 atm⋅s−1
0.680 atm⋅s−1